Collapsible tube



Oct. 27, 1936. K, RUE- rz 2,058,830

COLLAPS I BLE TUBE Filed June 3, 1935 y I7 IZ/7511111114? Patented Oct. v27, 1936 UNITED STATES 2,058,830 COLLAPSIBLE TUBE Karl Ruetz, Zurich, Switzerland Application June 3, 1935, serial No.'24,691 In Germany June 11, 1934 3 Claims.

The application Ser. No. 724,720 of May 9, 1934 concerns a collapsible tube with prismatic head,

this having a discharge opening for issuing the` contents, and being provided with a longitudinally movable sliding closure cap on top of said head. What characterizes the aforementioned application is that the packing means with which the slide is provided, is lifted on opening the slide and, on closing the slide,'is pushed down again from above on to the opening. The means for managing to lift the springy part of the slide are either special springs (Figs. 1-7) or lips bent downward on the front part of the slide (Figs. 8f-14) which rise to the surface of the tube head and thus keep the packing means at a distance from the tube head. In the last mentioned examples, part of the slide is itself made into a spring.

The present invention now concerns additional improvements of the invention as described in application Ser. No. 724,720, namely that the lifting of the springy part of `the closing head is managed by different means sliding no longer on the surface of the tube head, but along the ,surface of the tube cylinder instead. A further alteration consists in the method of making part of the slide springy.

In the draw/ing several ways of executing the object of the/invention are exemplified:

Fig. 1. showing in perspective a first way of executing the object in the closed position,

Fig. Zthe same in the open position.`

Figs.l 3-6 show a second way of executing; namely,

Fig. 3 in vertical section in closed position,

Fig. 4 the same in vertical section in open position,

Fig. 5 a plan of Fig. 3,

Fig. 6 a plan of Fig. 4,

Fig. '7 a section along line I-I of Fig. 5,

Fig. 8 a section along line `II---ll of Fig. 5.

Figs. 9-13 show another way of executing; namely,

Fig. 9 shows the slide in closed position in elevation and the tube body in section,

Fig. 10 shows the slide by itself in plan,

Fig. 11 shows the slide by itself in vertical section along line III- III of Fig. 10,

Fig. 12 shows a face view of the slide, and Fig. 13 a section along line IV--IV of Fig. 11. On each of the longer sides of the Aprismatlc tube head 2, provided with a discharge opening 3 of the tube cylinder I, a 'longitudinal groove lll` is arranged in Figs. 1 and 2. An edge bent inward 22 Aof parts 23 of the slide grips either of these longitudinal grooves |10 on either side. Parts 23 are fastened in 'the rear of`the back side 24 of the slide. Furthermore, the cover 25 of the slidewhich has lateral walls 26 is fastened to the back side 24. The packing means l2, for instance a cork-plate, is' fastened to the bottom surface of the slide. At the front part of the upper portion of the slide, which consists of the back side 24, the lateral Walls 26 and the cover 25, there are feet bent down 21, possessing parts 2B, parallel to surface 3l of tube cylinder l. Notice that the feet and the lateral walls 26 are separated by slits from parts 22, the latter being connected with the slide in rear of back side 2,4 only. In surface 3|, recesses 29 are arranged, the size of which corresponds to'that of parts 28. On moving the slide from the position marked in Fig. 1 to the position shown by Fig. 2, parts 28 are pushed from the recesses 29 and thus lift the packing meansof the surface of the tube head 2, las the slits between parts 22 and 26 allow the back side 2li some elasticity. `Parts 2d now slide along surface 3 l, keeping the packing means together with the cover of the slide 25 lifted up. When one of parts 28 hits against a stop 30 on surface 3l, the movement of the slide in a backward sense is terminated. When, on closing the slide, parts 28 spring back into the openings 29 again, the packing' means I2 is pressed down vertically on the opening 3. i

In Figs. 3-8 the central part of Icover 25a is made to be springy by means of slits between itself and the lateral Walls 26. The slits 32a reach as far as points 32. On the bottom side of the. elastic cover 25 the packing means I2a is fastened. At the front of the cover, there are fastened aprons 2lia which are bent down and are ended by parts 288. For these, recesses 29 on surface 3la are provided. Stops 3i on surface 3l serve to limit the opening movement of the slide.

While the'ways of executing seen so far are particularly suitable for manufacture in metal, as for instance aluminium, the slide as shown in Figs. 9-l3'is suitable for manufacture in synthetic resin such as Bakelite. Its construction resembles that of the Way of executing shown in Figs. 3-8, except that parts 23b at the feet 2lb are not bent parallel to surface 3|b, but are bent down. When the slide is in closed position, parts 28h lie in the recesses 29", and when the slide begins to open, they glide on the surface Bib and, in completely open position of the slide, they sink into additional recesses 341. It is only when one starts closing the slide again that the parts 28b lift the slide cover 2lib between slits 32 again and let cover 25b with packing means I2b spring down from above on to opening 3 shortly before the closing is completed.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a collapsible tube having a prismatic head with a discharge .opening for the contents, a sliding closure-cap on top of said head longitudinally movable and of the same length as said head, one end of said cap being springy and longitudinally movable up to a point adjacent to said opening and being resiliently liftable, packing means on the bottom-side of said end, rigid lips bent down from said springy end as liftingmeans for the latter and extending onto the top-surface of the tube-body.

2. In a collapsible tube having aprismatic head, a sliding closure cap on top of said head longitudinally movable and of the same length as said head, one end of said cap being springy and longitudinally movable up to apoint adjacent to the orifice of the tube, said end being resiliently liftable, packing means on the bottom-side of said end and as lifting means for said end rigid lips bent down from said springy end and extending into recesses of the top-surface o f the tube-body.

3. In a collapsible tube having a prismatic head, a sliding closure cap on top of said head longitudinally movable an'd of the same length as said head, one end of said cap being springy and being longitudinally movable up to a point adjacent to the tube-orifice, said end being resiliently liftable, packing means on the bottom-side of said end, rigid lips bent down from said springy end as lifting means for said end, said lips in the closed position of the cap engaging into recesses of the top-surface of the tube-body andadditional recesses to therear ofthe aforesaid ones for engaging the lips in the open posii tion of the cap.

KARL RUETZ. 

